Autowall helps you to quickly set Selfie or any picture taken with back custom camera as a wallpaper. AutoWall gives you an option to directly set pictures taken from camera to your wallpaper. The picture taken can also cropped and rotated before setting it to the wallpaper. Since it is a very light weight application it can run in background and does not take much time in processing. The best thing about AutoWall is that you don't have to go inside the gallery or use any camera in the app to set a picture as wallpaper.

Here is how to do it:

Step 1: Download AutoWall (Beta) From Playstore
https://play.google.com/store/apps/details?id=photonapps.com.selfiewallpaper

Step 2: Open the App and You will land on setting page
Activate - yes or no
Ask before set - yes (pop up will appear) or no (direct pic/selfie to wallpaper)
Crop before set - yes or no

Step 3: Take a Normal Selfie with Front Custom Camera
Crop mode is on
If crop is on you can crop the selfie or can rotate it as per the convenience,otherwise it directly sets as wallpaper.
 

Step 4: Taking Back Custom Camera Picture with Crop Mode Off
No need to go into the app and use camera from the app.Just use normal android custom camera.​
If both crop and ask before set is off then the picture directly sets as wallpaper.There is no pop-up/notification or cropping screen.